Improvement in razor-strops



A. v. BROKHAHNE. Razor-strop.

No. 208,670. Patented Oct. 8,1878.

Ny PETERS, PHOTO-LITHOGRAPMEH. WASHINGTON D C UNITED STATES PATENTOEEIcE.

ALFRED V. BROKHAHNE, OF NEV YORK, N Y.

IMPROVEMENT IN RAZOR-STROPS.

Specification ibrluing part of Lettcrs Patent N0. 208;@70. lllrHl OfllwlIQ, 11479; HDPCMOH Ilifl August 15, 1873.

To all whom it may concern Beit known that I, ALFRED V. BEOKHAHNE, ofNew York city, have invented certain new and useful Improvements inRazor-Strops, of which the following is a specification:

This invention, briefly stated, consists, mainly, in th ecombinatiomwith a flexible stroppin g-band of canvas or other permeableiibrous material, of an internal film or layer of grease, orequivalentpasty lubricatingmatter adapted to work through the interstices of thefabric by the action of stroppin g, to preserve the stropping-surface ina lubricated condition; also, in the combination of an internal core ofsheet-lead with au outer inclosin g layer of canvas or similar wovenfabric, as hereinafter fully set forth.

In the drawing, Figure 1 is a cross-section of a stropping-bandconstructed according to my invention; and Fig. 2 is an elevation of acomplete razor-strop of usual construction, provided with myimprovement, mounted in the usual manner, which I prefer to employ.

The essential features of my invention are illustrated iu Fig. l. a aindicate the strop` ping-band proper, which for the purposes of myinvention I prefer to construct of canvas of the kind generally used instrops. This is preferably formed, in the usual manner, in twofolds,formin g a flat sheath, as shown,the edges of the folded canvasstrip being met together and stitched on the under side of the band,while the level upper side forms the stroppingsurface.

One feature of my invention consists in a flexible leaden core, A,placed within the canvas sheath, or underlying the stropping-surfacethereof, and preferably formed of thin sheet-lead. This lead coreimparts a firmness to the strop, enabling the stropping-surface toremain more level and taut, and thus insure a more uniform and perfectstropping action on the razor-blade, obviatin g undue deflection of themargins of the strop, which commonly occurs with the usual canvas strop,and impairs the uniformity of the razor-edge.

The lead has also the advantage of greater cheapness, and of being sosoft as not to injure the razor-edge should it come in contact therewithon the wearing down of the canvas. Its superior softness also rendersthe stropband more flexible and passive, while yet being firm. The extraheaviness of the lead is also an additional advantage, as it impartsgreater inertia to the strop, rendering it more immovable and steadyunder the stropping movement of the razor.

It is not essential that the canvas encirclel the metal core, as shown,as the edges of the canvas and metal may be secured together on theunder side; but the sheath form shown is preferable, as its constructionis more simple.

The other main feature of my invention consists in an internal layer orfilm of grease, wax, or equivalent pastylubricating material, B,underlying the stropping-surface, and, when the metal core is employed,intervenin g between the metal-core and the stropping-surface. Thislubricating-film, which preferably consists of fine tallow orparaffne-wax, is designed more especially for use with canvas or similarwoven fabric; but it may also be used with any permeable fibrousmaterial usually employed for strops, such as leather, &c. 5 but thecanvas is best adapted.

The grease or wax is absorbed by the over lying` fabric, and graduallyworks through the interstices thereof under the action of stropping,thus imparting to the grained stroppin gsurface of the canvas a smoothlubricating quality, which, while in no way detractin g from thecharacteristic stropping quality of the canvas, enables the blade tomove upon the surface with much greater freedom and ease, and imparts aliner finish to the serrated quality of the edge, more free from featheror burr, than is the case when unlubrieated canvas is used. Thelubricating-film has also the effect of rendering the canvas moreweatherproof, so that it but seldom requires adjustment to compensatefor the eifects of the weather.

The lubricatingglm may be used with or without the metal core, as theircombined use is not essential, although preferable, for the metal formsan impervious base on which to support the film under thestroppingsurface, as will be understood.

My improved stropping-band may be mounted in any suitablemanner,preferably 011 an expansible core or body of the usual form, asshown in Fig. I, the strop being formed as an endless band eneireling:the expansible body, as shown, or one half of the endless band being`formed ot leather ot' the usual hind. and the other haltl ot' theimproved eonstruetion, the improved strop. with its metal eore, being:extended about two-thirds around the bend at each end ol the body, whereit joins the leather band by a suitableeonneetion. as shown in Fig'. 1.

I am aware that a lulu-ieatiug-strop hasl been heretofore eonstrueted:but in this ease the strop has been formed ot' a hollow intlexible corehaving.;v stro]ping-surl'an'es on its exterior, with a piston operating'in the internal tube or hollow by the serew morena-nt of the v handle,to expel aliquid lubrieant to the outer surfaces. )ly invention,however, as ma)v be observed, is quite distinet from this deviee, as itconsists of a tlexible tbrous stropping-band inclosingan internal tilmot a pasty lubrieant.

which works through the interstiees otl the 1 fabric by the stroppinglnovement ot' the razor.

I am also aware that a metal or zine eore has been used in a leatherstroppingrbzunl, and l therefore do not wish to be understood asClaiming:` a metal eore, broadly.

l. A razor-strop formed of a flexible band ot' a permeable librousstropping material, provided with an internal or underlying' tilm orlayer ot' pasty lubricating matter, adapted to work through the,interstices ot' the fibrous band bv the stropping aetiomto preserve thestropping-surtaee in a lubricated eondition, substantially as hereinshown and deseribed.

1.. A raxor-st rop l'ormed ot' a stroppingvband ot' canvas, sustained onan internal or underlying.: band ot' lead, substantially as herein shownand deseribed.

il. A razor-strop'tbrmed of an outer or overlying;l layer ot' apermeable and fibrous stropping material, an iuternalstrp ot tlexiblemetal, and a layer ot'pastylubricating material intervening between themetal and tho stroppinp; l'abrie, substantially as herein set forth.

S. ll. Warns, ents. .\l. llnauNs.

